Improvement in boat-detaching- apparatus



tiititd (Stent gaat aan.

WILLIAM S. RYERSON, .OF NEW YORK, N. Y., ASSIGNOR TO HIMSELF, AMOS L. TRIPP, AND CHARLES GHAMBERS, OF SAME PLACE.

Letters Patent No. 91,488, dated June 15, 1869.

IMPROVEMENT IN BOAT-DETACHING- APPARATUS.

The Schedule referred to in these Letters Patent and making part of the same.

To all whom it 'may concern Be'it known that I, VILLIAM S. RYERSON, of the city and State of New York, have invent d and made anew and useful Improvement in Detaehing Boats; and I do hereby declare the following to bea full1 clear, and exact description of' the said invention, reference being had to the annexed drawing, making part of this specification, wherein'- Figure 1 is an elevation of the said meansfor detaching boats;

Figure 2 is an elevation of the same 'at one end,- with the parts partially moved for detaching the boat; and

Figure 3 is a sect-'ion at the line x x.

Similar marks, of reference denote the same parts.

This invention is designed for detaching boats from the falls or davit-bloeks with unerring precision, so as to eiectnally prevent one end being detached before the other, and thereby the risk of loss ot' life is greatly lessened or prevented.

Myinventiou consists in a hook-ended shaft, supported by slings that are connected together by a semicircular bar, so that the hook-ended shaft can be 'partially revolved to slip the supporting-,rings of the boatchains oi'the hooks simultaneously, and thereby detach the boat at both ends simultaneously.

a a are slings that are supported by the falls orldavit-blocks in any usual manner, b b representing said blocks, and c the upper ends of the davits.

The slings ar a are rmly connected together by the semicircular bar d, within and against which lies the shaft e, that passes through the slings a, and termi nat-es with the turned-up or hooked ends c.

Upon these ends e the rings f of the boat-chains g are hooked, when the hooks e are in the position shown in fig. 1.

'Near the middle of the har (l are ring-flanges h, attached tod, and surrounding the shaft e, and lc is a lever frmlyattached to the shaft e, and il is a pin, to

be inserted through holes in the flanges h, to hohl the said hooks e' entirely turned up, so as to come in contact at their ends, or nearly so, with the guard-arms l, or hold them partially turned up, so that the rings f can be hooked upon said hooked ends e. K

It will now be understood, that by turning the shaft e bythe lever k, the hooks e will be turned down, so

In witness whereof, I have hereunto set my signa.-

ture, this 22d day of March, A. D. 1869.

WM. S. RYERSON.

Witnesses:

OHAs. H. SMITH, Geo. T. PINCKNEY. 

